CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue	$ 25,214,000	$ 25,295,000	$ 47,111,000	$ 50,530,000
Costs and expenses:
Cost of revenue	3,220,000	3,346,000	6,184,000	6,798,000
Research and development	4,840,000	4,272,000	9,658,000	8,896,000
Sales and marketing	16,431,000	20,849,000	34,436,000	41,842,000
General and administrative	16,706,000	17,236,000	35,789,000	40,273,000
Gain from litigation settlement	0	(46,000,000)	(7,500,000)	(46,000,000)
Total costs and expenses	41,197,000	(297,000)	78,567,000	51,809,000
(Loss) income from operations	(15,983,000)	25,592,000	(31,456,000)	(1,279,000)
Interest (expense) income, net	(1,321,000)	334,000	(2,392,000)	447,000
Change in fair value of common stock warrant liabilities	0	2,000	0	11,000
Other (expense) income, net	(637,000)	190,000	(1,196,000)	254,000
(Loss) income before income taxes	(17,941,000)	26,118,000	(35,044,000)	(567,000)
(Benefit from) provision for income taxes	(19,000.0)	73,000	20,000.0	111,000.0
Net (loss) income	$ (17,922,000)	$ 26,045,000	$ (35,064,000)	$ (678,000)
(Loss) earnings per share:
Basic (in dollars per share)	$ (1.16)	$ 1.47	$ (2.21)	$ (0.04)
Diluted (in dollars per share)	$ (1.16)	$ 1.44	$ (2.21)	$ (0.04)
Weighted average shares outstanding:
Basic (in shares)	15,491,239	17,776,904	15,888,064	18,119,062
Diluted (in shares)	15,491,239	18,079,310	15,888,064	18,119,062
Other comprehensive income:
Change in unrealized gain on available-for-sale investments, net of tax	$ 0	$ 1,000	$ 0	$ 7,000
Total other comprehensive income	0	1,000	0	7,000
Total comprehensive (loss) income	$ (17,922,000)	$ 26,046,000	$ (35,064,000)	$ (671,000)